Investigation on low cycle fatigue and fracture behaviors of directionally solidified DZ4 superalloy

Weifang Zhang; Yunju Li; Wei Gao; Jinjuan Fan; Chunhu Tao

Investigation on low cycle fatigue and fracture behaviors of directionally solidified DZ4 superalloy

Weifang Zhang^*
, Yunju Li
, Wei Gao
, Jinjuan Fan
, Chunhu Tao

^*此作品的通讯作者

Beijing Institute of Aeronautical Materials

科研成果: 期刊稿件 › 文章 › 同行评审

4 引用（Scopus）

摘要

The low cycle fatigue (LCF) and fracture behaviors of directionally solidified DZ4 superalloy at 760°C and 800°C were studied. Combined with fracture observation, the fatigue crack initiation and propagation were analyzed. The results show that the LCF of DZ4 superalloy at 760°C and 800°C can be contributed to stress fatigue owing to the main elastic damage in LCF processing. The elastic damage has a favorite relativity to the fatigue life. The high life LCF cracks of DZ4 super alloy favorably initiate at the transverse segment of longitudinal grain boundary. And formation of typical fatigue striation on fatigue crack steady propagation is difficult.

源语言	英语
页（从-至）	217-220
页数	4
期刊	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
卷	34
期	2
出版状态	已出版 - 2月 2005
已对外发布	是

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title = "Investigation on low cycle fatigue and fracture behaviors of directionally solidified DZ4 superalloy",

abstract = "The low cycle fatigue (LCF) and fracture behaviors of directionally solidified DZ4 superalloy at 760°C and 800°C were studied. Combined with fracture observation, the fatigue crack initiation and propagation were analyzed. The results show that the LCF of DZ4 superalloy at 760°C and 800°C can be contributed to stress fatigue owing to the main elastic damage in LCF processing. The elastic damage has a favorite relativity to the fatigue life. The high life LCF cracks of DZ4 super alloy favorably initiate at the transverse segment of longitudinal grain boundary. And formation of typical fatigue striation on fatigue crack steady propagation is difficult.",

keywords = "Directionally solidified super alloy, Elastic damage, Low cycle fatigue",

author = "Weifang Zhang and Yunju Li and Wei Gao and Jinjuan Fan and Chunhu Tao",

year = "2005",

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language = "英语",

volume = "34",

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journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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TY - JOUR

T1 - Investigation on low cycle fatigue and fracture behaviors of directionally solidified DZ4 superalloy

AU - Zhang, Weifang

AU - Li, Yunju

AU - Gao, Wei

AU - Fan, Jinjuan

AU - Tao, Chunhu

PY - 2005/2

Y1 - 2005/2

N2 - The low cycle fatigue (LCF) and fracture behaviors of directionally solidified DZ4 superalloy at 760°C and 800°C were studied. Combined with fracture observation, the fatigue crack initiation and propagation were analyzed. The results show that the LCF of DZ4 superalloy at 760°C and 800°C can be contributed to stress fatigue owing to the main elastic damage in LCF processing. The elastic damage has a favorite relativity to the fatigue life. The high life LCF cracks of DZ4 super alloy favorably initiate at the transverse segment of longitudinal grain boundary. And formation of typical fatigue striation on fatigue crack steady propagation is difficult.

AB - The low cycle fatigue (LCF) and fracture behaviors of directionally solidified DZ4 superalloy at 760°C and 800°C were studied. Combined with fracture observation, the fatigue crack initiation and propagation were analyzed. The results show that the LCF of DZ4 superalloy at 760°C and 800°C can be contributed to stress fatigue owing to the main elastic damage in LCF processing. The elastic damage has a favorite relativity to the fatigue life. The high life LCF cracks of DZ4 super alloy favorably initiate at the transverse segment of longitudinal grain boundary. And formation of typical fatigue striation on fatigue crack steady propagation is difficult.

KW - Directionally solidified super alloy

KW - Elastic damage

KW - Low cycle fatigue

UR - https://www.scopus.com/pages/publications/14844348293

M3 - 文章

AN - SCOPUS:14844348293

SN - 1002-185X

VL - 34

SP - 217

EP - 220

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 2

ER -

Investigation on low cycle fatigue and fracture behaviors of directionally solidified DZ4 superalloy

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